What are the common diseases of Angelica sinensis? A complete analysis of prevention and control methods

Angelica sinensis is an important traditional Chinese medicine with powerful effects and relatively high economic value, which has attracted many people to grow it. However, besides the growing environment and other considerations, diseases are what affect its growing quality and yield. Below, Qinnong Network brings you the common diseases of Angelica sinensis and their prevention and control methods. Let's take a look.

1. Root rot

Root rot, as the name suggests, mainly harms the root system of the planted crop. When the disease occurs, the plant's root system turns brown, and as the condition worsens, the roots gradually rot and become black and water-soaked, and finally the plant's leaves gradually turn yellow and withered, ultimately leading to the death of the plant.

Prevention and control methods: Choose a cultivation site with good soil drainage and good aeration. The cultivation site should preferably be plowed once every two years, and continuous cropping should be avoided. Before planting, disinfect the soil and seeds. When disease is found, deal with it promptly, pull out the diseased plants in time, then destroy them, and disinfect the area around the diseased plants to prevent the virus from spreading.

2. Powdery mildew

At the initial stage of powdery mildew, grayish-white powdery disease spots begin to appear on the leaves. As time goes on, small black particles gradually appear on the leaves, and finally the leaves are covered with white powder, and the plant slowly withers and dies.

Prevention and control methods: Disinfect the seeds and soil before planting. After disease is found, promptly pull out the diseased plants and burn them. Continuous cropping should be avoided, and crop rotation is best. In the early stage of the disease, spray continuously with a 500-fold solution of zineb for control.

3. Sclerotinia rot

At the initial stage of sclerotinia rot, the leaves begin to turn yellow, and the root system begins to slowly rot and become hollow. This is similar to root rot, but the outside of its root system looks normal, while the inside has already rotted and become hollow, and the cavity contains multiple small black granular sclerotia.

Prevention and control methods: Disinfect the seeds and soil before planting. Lime or plant ash can be applied in the planting holes. When diseased plants are found, handle them in the same way as above. In the early stage of the disease, spray continuously with a 500-fold solution of zineb for control.

4. Rust disease

Rust disease mainly harms the leaves. When the disease occurs, rust-colored irregular disease spots appear on the leaves, along with rust-colored powder. Rust disease is extremely harmful. Its spores have very strong vitality and can survive in the environment, and can cause repeated infections many times. It spreads extremely quickly and affects a very wide area.

Prevention and control methods: After harvesting Angelica sinensis, burn the remaining plants and diseased leaves in a centralized manner, which can reduce the source of overwintering bacteria. In the early stage of the disease, spray with a 2,000-fold solution of 25% wettable powder triadimefon.

The above is the full introduction to the common diseases of Angelica sinensis and their prevention and control methods. The ones with greater harm and more common occurrence in Angelica sinensis are the several types above. Doing a good job in the prevention and control measures for Angelica sinensis diseases is the key point to maximizing Angelica sinensis yield. For more related agricultural knowledge, stay tuned to Qinnong Network.